It's not just speed it's the distance that you keep. If everyone kept to the 3 seconds rule, which basically applies at any speed we'd all be safer. Further you

It's not just speed it's the distance that you keep. If everyone kept to the 3 seconds rule, which basically applies at any speed we'd all be safer. Further you simply increase that when there's ice and rain. France has broken white stripes along side their motorway with gaps every 4 seconds travelling at 80 mph. It's beautifully simple and saves on paint too.